Swivel-stand for lathe-chucks.



No. 741,081. Y PATENTED OCT. 13, 1903.

C. B. THIEBAUD.

sWVBL-STAND EUR LATHE GHUGKS.

` APPLIOATION FILED JAN.. 10, 1903. y

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NO MODEL.

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No. 741,981. PATENTED 00T. 1s, 1903. c. E. THIEBAUD.

SWIVEL STAND FOR IIA-THE GHUGKS. lMPLIUA'IHJIN FILEUJN. 1o. 1903.

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N0 MODEL.

nuemtoz Nrrn Patented october 13, 190s.

SWIVEL-STAND FOR LATHE-CHUCKS.

SPEGIFICATION forming part of Letters Patent No. 741,081, dated October 13, 1903. Application filed January l0, 1903. Serial No. 138,548. (No model.)

To all whom, it Hefty cm1/cern: Y

Be it known that I, CHARLES EMoRY THIE- BAUD', a citizen of the United States, residing at Duquesne, in the county of Allegheny and State of Pennsylvania, have invented a new and useful Swivel-Stand for Lathe-Chucks, of which the following is a specification.

My invention is an improvement in stands for lathe-chucks, the object of the invention being to facilitate the handling of heavy chucks. Heretofore much inconvenience has been experienced in removing and replacing chucks of the three and four jaw type, and my device is intended to save the time and labor so expended by providing a stand running parallel with the lathe-shears and having a swiveled portion adaptedv to swing around and receive the chuck when 'run off the spindle and then swing back and permit the chuck to be rolled back behind the headstoel: out of the way until again mounted.

In the accompanying drawings, Figure l is a perspective view showing the practical application of my device. Fig. 2 is a plan view of my stand, the swivel portion being in alinement with the V-ways. Fig. 3 is a longitudinal section about on the line 3 3 of Fig. 2. Fig. 4 is a section on or about the line 4:4 of Fig. 3.v Fig. 5 is a side elevation. Fig. 6 is an end elevation.

In carrying out myimprovement I employ.

a block A, running parallel to the shears B, though it is immaterial as to the exact direction in which the block is positioned. On this block along the sides are laid the rails C, running parallel to each other and forming a guideway along which the chuck may be rolled. This main guideway does not extend to the forward end of the block, and on that portion of the block in advance of the rails C is swiveled the block D', having'a recess centrally formed on its upper face in which the head E of the swivel E rests below the upper face of the block D. Y

' The forward end of the part A is concaved, as shown at A', and the rear end of the swiveled block is convex and adapted to swing into and ont of contact with the forward end of the block A. Guide-rails D' are placed on the block D, overlapping the rear end and adapted to aline with the rails C. Beneath the central portion of the block D is placed a washer F, while under the forward end is placed a wear-plate F.

At theA rear end of the block Aand forward end of the block D are placed buders G. The blocks A and D are mounted on' a stand H, supported by the legs H and braced by the cross-pieces H2 and the diagonal braces H3,- which are secured in the cross-pieces and centrally to a central rib H4, extending lengthwise along the under surface of the stand. I do not desire to limit myself to any special construction of stand or to any particular way of bracing same.

Vhen the chuck'G is to be removed from the spindle, the block D is swung around transverse to the block A, the rails D resting at their projecting ends on the shear B. The chuck is rolled on the block D, which is then swung around until the rails D' aline with the rails C, and the chuck can be rolled between the guide-rails onto the block A, where it will be out of the way.

Having thus fully described my invention, what I claim as new, and desire to secure by Letters Patent, is-

l. A stand for lathe-chucks comprising a supporting-stand carrying guide-rails on its rear portion, a block swiveled on its front portion, and rails carried by said block and projecting beyond its rear end, said rails bel ing adapted to aline with the rails on the rear of the stand.

2. -A stand for lathe-chucks comprising a Vblock carrying guide-rails said block having a concaved forward end, a swiveled block having a convex rear end adapted to iitinto the forward end of the rear block, guide-rails on the swiveled block projecting beyond the rear of said block and adapted to aline with the rails of the first-named block, a washer beneath the swiveled block, a wear-plate ,secured on its under surface adjacent the convex end,

and buffers at opposite ends of the blocks..

'CHARLES EMORY THIERAUR.

Witnesses:

HOWARD L. BLACK,

WM. G. Esrnr. d 

